Card Trivia:Neo Signal

"Neo Signal":

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• Appearances

• This card's artwork is a reference to smoke signals.

• This card has four different archetypal counterparts appearing in the Yu-Gi-Oh! GX era:
  • "Hero Signal" for "Elemental HERO"
  • "Destiny Signal" for "Destiny HERO"
  • "Apparition" for "Vision HERO"
  • "SOS" for "Masked HERO"

• This card's effect specifies a Level 4 or lower "Neo-Spacian" monsters, even though there are no Main Deck Level 4 "Neo-Spacian" monsters.